Posted by JMOR on December 05, 2013 at 08:07:43 from (72.181.173.171):
In Reply to: confused posted by 1948jr on December 05, 2013 at 05:57:00:
Quoting Removed, click Modern View to seePoints generally "burn" as a result of arcing which can be aggravated by wrong or bad condenser OR by too much coil current (your question). Typical correct current is around 3 1/2 to 4 amperes, when stalled. Coil current is a function of voltage (6 or 12 (7.2 or 14.4) and primary circuit resistance. Primary circuit resistance consists of coil winding resistance or coil winding resistance plus resistor resistance. In either case you can obtain the magic 4 amperes either with the proper coil primary resistance or proper coil+resistor values. I have coils ranging from 0.5 Ohms up to 4 Ohms primary resistance and the same 4 amperes can be obtained by using a 3 Ohm coil & 12v as can be obtained by using the 0.5 Ohm coil + a 2.5 Ohm resistor. In either case, we have 12/3=4. There are many roads to the same place.
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